Hioki 3286-20 - Page 43

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Chapter 2 Measurement Procedure

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COSφ

U, I

1φ P

SINφ

U, I

COSφ

U, I

1φ PF

COSφ

U, I

3φ PF

SINφ

U, I

2. Connect the voltage cord to the instrument, then

connect the red cord, black cord, and yellow cord to

the circuit under measurement according to

prescribed connections. For a three-phase circuit,

the instrument will display the results of phase

detection as follows:

Normal phase

Reverse phase

Missing phase

3. Open the tip of the clamp core and clamp the

conductor (on the side to which the red voltage cord

is connected) roughly into the center of the clamp

core, then conduct measurement. In this operation,

clamp the conductor in such an orientation that the

arrow mark on the clamp sensor surface points to

the load side from the power supply side.

4. Select active power, apparent power, power factor,

phase angle, or reactive factor with the

Watt

key.

Note that the 1φ P meter does not display phase

angle and reactive factor. The 1φ PF meter does not

display active power and apparent power.